A5069700353- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Radioactivity and Radon Measurements
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Radioactive contamination and transfer
- Nuclear physics research studies
- Nuclear reactor physics and engineering
- Radioactive Decay and Measurement Techniques
- Graphite, nuclear technology, radiation studies
- Atmospheric Ozone and Climate
- Inorganic Fluorides and Related Compounds
- Particle accelerators and beam dynamics
- High-Energy Particle Collisions Research
- Gas Sensing Nanomaterials and Sensors
- Advanced Semiconductor Detectors and Materials
- Geology and Paleoclimatology Research
- Scientific Research and Discoveries
- Nuclear Materials and Properties
- Luminescence Properties of Advanced Materials
- Muon and positron interactions and applications
Max Planck Institute for Nuclear Physics
2013-2024
Institute of Physics
2011-2018
Jagiellonian University
2018
Max Planck Society
2002-2015
Max Planck Innovation
2002-2015
Institute for Nuclear Research
2007
Joint Institute for Nuclear Research
2007
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
2007
We report the measurement of electron neutrino elastic scattering from 8B solar neutrinos with 3 MeV energy threshold by Borexino detector in Gran Sasso (Italy). The rate neutrino-induced events above this is 0.217 +- 0.038 (stat) 0.008 (syst) cpd/100 t, which corresponds to equivalent unoscillated flux (2.4 0.4 0.1 (syst))x10^6 cm^-2 s^-1, good agreement measurements SNO and SuperKamiokaNDE. Assuming predicted high metallicity Standard Solar Model, average survival probability measured be...
A bstract The very low radioactive background of the Borexino detector, its large size, and well proved capability to detect both energy electron neutrinos antineutrinos make an ideal case for study short distance neutrino oscillations with artificial sources at Gran Sasso. This paper describes possible layouts 51 Cr ( ν e ) 144 Ce- Pr $$ \left( {{{\overline{\nu}}_e}} \right) source experiments in shows expected sensitivity eV mass sterile three different phases experiment. Expected results...
The Pauli exclusion principle (PEP) has been tested for nucleons ($n,p$) in $^{12}\mathrm{C}$ with the Borexino detector. approach consists of a search $\ensuremath{\gamma}$, $n$, $p$, and ${\ensuremath{\beta}}^{\ifmmode\pm\else\textpm\fi{}}$ emitted non-Paulian transition $1{P}_{3/2}$-shell to filled $1{S}_{1/2}$ shell nuclei. Due extremely low background large mass ($278$ tons) detector, following most stringent up-to-date experimental bounds on PEP violating transitions have established:...
This Letter of Intent has been submitted to the Scientific Committee INFN Laboratori Nazionali del Gran Sasso (LNGS) in March 2004. It describes a novel facility at LNGS study double beta decay 76Ge using an (optionally active) cryogenic fluid shield. The setup will allow scrutinize with high significance on short time scale current evidence for neutrinoless existing diodes from previous Heidelberg-Moscow and IGEX experiments. An increase lifetime limit can be achieved by adding more...
We have developed a new method to measure krypton traces in xenon at unprecedented low concentrations. This is mandatory task for many near-future low-background particle physics detectors. Our system separates from using cryogenic gas chromatography. The amount of then quantified mass spectrometer. demonstrate that the has achieved detection limit 8 ppq (parts per quadrillion) and present results distilled with concentrations below 1 ppt.
Results of background measurements with a prototype the Borexino detector were used to search for 478 keV solar axions emitted in M1-transitions 7Li*. The Compton conversion axion photon A+e→e+γ, axioelectric effect A+e+Z→e+Z, decay two photons A→2γ and Primakoff on nuclei A+Z→γ+Z are considered. upper limit constants interaction electrons, nucleons – gAegAN≤(1.0–2.4)×10-10 at mA≤450 gAγgAN≤5×10-9 GeV-1 mA≤10 obtained (90%c.l.). For heavy mass 100<mA<400 limits gAe<(0.7–2.0)×10-8...
A challenge in many present cutting-edge particle physics experiments is the stringent requirements terms of radioactive background. In peculiar, prevention Radon, a noble gas, which occurs from ambient air and it also released by emanation omnipresent progenitor Radium. this paper we review various high-sensitivity Radon detection techniques approaches, applied looking for rare nuclear processes happening at low energies. They allow to identify, quantitatively measure finally suppress...
A search for full energy depositions from bosonic keV-scale dark matter candidates of masses between 65 and 1021 keV has been performed with data collected during Phase II the GERmanium Detector Array (Gerda) experiment. Our analysis includes direct absorption as well Compton scattering. With a total exposure 105.5 kg years, no evidence signal above background observed. The resulting exclusion limits deduced either Bayesian or Frequentist statistics are most stringent constraints in major...
The previous article about material screening for GERDA points out the importance of strict and selection radioimpurities as a key to meet aspired background levels experiment. This is directly done using low-level gamma-spectroscopy. In order provide sufficient selective power in mBq/kg range below, employed gamma-spectrometers themselves have requirements, make use an elaborate shielding system. gives account setup two such spectrometers. Corrado located depth 15 m w.e. at MPI-K Heidelberg...
Radioactive noble gas isotopes are a potential source of background in low‐level physics experiments, since they present the atmosphere and also widely used gases produced from atmosphere. We have studied 39Ar, 85Kr 222Rn contamination commercially available nitrogen using low proportional counters rare mass spectrometer. It was found that air separation plants very effective removing traces radioactive purity can be significantly higher than commercial specifications. On other hand handling...
BOREXINO has set new standards in the field of ultra-low background experiments. Such a success was only possible by strict quality control program during construction phase experiment. In this paper, we describe how materials and auxiliary systems detector were screened for their residual radioactivity with unprecedented high sensitivity. The highly sensitive assay techniques developed purpose also used to validate purity water nitrogen Moreover, report on production 222 Rn -free synthetic...